An Analysis of Somatic Chromosome Complements of Both Sexes of Two Primates, the Slender Loris, Loris Tardigradus, and Rhesus Monkey, Macaca Mulatta

Manna, G. K.; Talukdar, Madhuri

doi:10.1515/mamm.1968.32.1.118

Cited by 12 publications

(4 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, since centric fusion seems to be a much more common mechanism of karyotypic evolution in most animal groups, and since karyotypes with 62 chromosomes also occur in the closely related Lorisidae (in Perodicticus potto and Loris tardigradus; BENDER ~¢ CHU, 1963;MANNA • TALUKDAR, 1968), it is much more likely that the chromosome number of crassicaudatus is more original than that of senegalensis.…”

Section: G Crassicaudatus and G Senegalensismentioning

confidence: 99%

Cytotaxonomy of the Lorisoidea (primates: Prosimii). I. Chromosome studies and karyological relationships in the Galagidae

Boer

1973

Genetica

View full text Add to dashboard Cite

Chromosome studies were made in 33 specimens of the genus Galago, referable to the following seven species and subspecies: alleni, crassicaudatus crassicaudatus, crassicaudatus kikuyuensis, crassicaudatus monteiri, demidovii, senegalensis ssp. and senegalensis braccatus. The chromosome numbers and karyotypic structures found in these (sub)species are reported and described. Of six of them idiograms were constructed. All other available data on the cytology of the Galagidae are reviewed.The intraspecific variation of the karyotypic structure in crassicaudatus and senegalensis was found to be clearly correlated with the subspecific identification of the specimens studied. The chromosome number variation in senegalensis braccatus (2n = 36, 37 or 38) however, is most probably a true genetic polymorphism, due to the translocation of an acrocentric chromosome to the short arms of a subtelocentric one. The karyological relationships within each of these two species is discussed.An extensive discussion is dedicated to the karyological relationships between the four Galago species hitherto cytologically studied. It was found that, based on the chromosome measurements carried out, the remarkable chromosome number difference between crassicaudatus (2n = 62) and senegalensis (2n = 38) can possibly be explained by postulating the successive occurrence of 24 centric fusions or translocations of whole acrocentric chromosomes in an original common karyotype, by which the chromosome number would have been reduced from 62 to 38. Because of its low diploid chromosome number (2n = 40) and its relatively high number of larger biarmed autosomes, the karyotype of alteni is probably closely related to that of senegalensis, though its exact position is not yet clear. The position of the karyotype of demidovii is also doubtful, but the high number of chromosomes (2n = 58) of which only six are submetacentrics seems to indicate that many original characteristics have been preserved in this karyotype. All possible karyological relationships are represented in a scheme. LEOBERT E. M. DE BOER

show abstract

Section: G Crassicaudatus and G Senegalensismentioning

confidence: 99%

Cytotaxonomy of the Lorisoidea (primates: Prosimii). I. Chromosome studies and karyological relationships in the Galagidae

Boer

1973

Genetica

View full text Add to dashboard Cite

show abstract

“…Based on their figure 1, however, we con sider that autosomes 1-15 appear to be SM or M, 16-28 A, and 2 9 -3 0 M. This gives an arrangement of 34 SMs/Ms and 26 As, the same as Adelaide loris A. The Indian loris studied by Manna and Talukdar [2] had 11 SM, 8 M and 11 A autosomal pairs in a different arrangement. Rao and Seshadri [14,15] did not give numbers of the differ ent chromosome types, although they stated that both M and A chromosomes were present.…”

Section: «Ftmentioning

confidence: 81%

“…Of the slender lorises whose karyotypes have previously been published, that described by Rumpler et al [6] came from Polonnaruwa, in the dry zone of northeast ern Sri Lanka, and thus is putatively consubspecific with Adelaide lorises A and D; those described by Manna and Talukdar [2] were one of the Indian subspecies, the specimens being purchased in Calcutta; the five male L. tardigradus lydekkerianus studied by Rao and Seshadri [14,15] were collected from the forests of Madras in Southern India; and the origins and taxonomic affiliations of the male specimen described by Egozcue et al [11 were not recorded. Like the Adelaide lorises, all previ ously published specimens had 2n = 62.…”

Section: «Ftmentioning

confidence: 99%

Karyotype Polymorphism in the Slender Loris (Loris tardigradus)

Goonan¹,

Groves²,

Smith³

1995

IJFP

View full text Add to dashboard Cite

Three wild-caught Sri Lankan and two captive-bred slender lorises (Loris tardigradus) in Adelaide Zoo, South Australia, were karyotyped from leucocyte cultures. The founder male and one of the founder females were of the grey subspecies L. tardigradus grandis, of which L. tardigradus nordicus is probably a synonym. The other founder female was a small red-brown L. tardigradus tardigradus. All three wild-caught individuals were karyotypically distinct from each other and their offspring showed the expected heterozygosity. The L. tardigradus tardigradus karyotype was no more distinct from the grey subspecies karyotypes than they were from each other. On present evidence, Indian and Sri Lankan lorises appear to be chromosomally distinct.

show abstract

“…Different karyotypes for Loris tardigradus have been published by Egozcue et al (1966) and Manna and Talukdar (1968); however, the differences are minor and the results may reflect a polymorphism in the species. All Lorisidae have submetacentric X chromosomes; the Y is acrocentric in P. potto and in the L. tardigradus studied by Manna and Talukdar (1968); submetacentric in Nycticebus and in the L. tardigradus studied by us .…”

Section: Suborder Prosimiimentioning

confidence: 89%

Comparative Mammalian Cytogenetics

Benirschke¹

1969

View full text Add to dashboard Cite

An Analysis of Somatic Chromosome Complements of Both Sexes of Two Primates, the Slender Loris, Loris Tardigradus, and Rhesus Monkey, Macaca Mulatta

Cited by 12 publications

References 10 publications

Cytotaxonomy of the Lorisoidea (primates: Prosimii). I. Chromosome studies and karyological relationships in the Galagidae

Cytotaxonomy of the Lorisoidea (primates: Prosimii). I. Chromosome studies and karyological relationships in the Galagidae

Karyotype Polymorphism in the Slender Loris (Loris tardigradus)

Comparative Mammalian Cytogenetics

Contact Info

Product

Resources

About